Email Blacklist Checker
One spam complaint spike can get your IP or domain listed on Spamhaus within hours — and block your emails at Gmail, Outlook, and Yahoo without any visible bounce. Enter your domain or sending IP to check 50+ blacklists in seconds.
What a Blacklist Listing Actually Costs You
How blacklisting works in under 60 seconds
A blacklist is a reputation database that inbox providers query in real time. If your IP or domain is listed, the receiving server can reject your email before it ever reaches the spam folder. There is no bounce, no notification — the email simply disappears.
The three tiers of blacklist severity
Tier 1 (Spamhaus ZEN, Barracuda) affects delivery at Gmail, Outlook, and Yahoo directly. Tier 2 affects mid-market ISPs and enterprise spam filters. Tier 3 lists have minimal delivery impact but are a warning sign of reputation deterioration.
What causes a listing — and how fast it happens
Spam complaint rate above 0.1% sustained for 24 hours. Sending to known spam traps. Sudden volume spikes from cold outreach. A single compromised account sending spam. Listings can appear in under 6 hours and take 24–72 hours to remove.
Delisting: what to fix before you request removal
Submitting a delisting request without fixing the root cause gets you re-listed within days. Fix the source first: identify the complaint spike, clean your list, update authentication, then submit. Most Tier 1 blacklists have a 30-day re-listing protection window.
Major Blacklists We Check
Protect Your Sending Reputation
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Why We Built This Tool
InboxEagle's 2,000+ customers saw that manual blacklist checks happen too late. A brand discovers a listing days or weeks after it appears — long after thousands of emails got silently dropped. This tool lets you check instantly. Real monitoring sends you an alert within minutes of a listing so you can delist before the next campaign.
What Goes Wrong Without This
A blacklist listing is invisible until your email goes missing. ISPs reject blacklisted mail with no bounce, no notification — the email disappears without a trace. If your domain or IP is listed on Spamhaus, Barracuda, or SORBS, your next campaign could be blocked in its entirety without you realizing until recipients ask where your email went.
Who This Tool Is For
E-commerce & DTC Brands
High-volume senders with large marketing lists who are one complaint spike away from Spamhaus listing — and need to catch it before a campaign blocks their revenue.
Email Marketing Agencies
Agencies managing multiple client sending IPs who need to monitor listing status across all clients and triage delisting requests quickly.
B2B SaaS & Outbound Teams
Outbound-heavy teams sending cold email who need to monitor IP reputation continuously because a new IP can get listed within 48 hours of a complaint spike.
Frequently Asked Questions
What happens if my domain or IP is blacklisted?
How did I get blacklisted?
How do I get delisted?
Do I need an InboxEagle account to use this tool?
Get Alerted the Moment You're Listed — Not Weeks Later
Manual blacklist checks show you a listing after the damage is done. InboxEagle monitors your domain and sending IP across 50+ blacklists continuously — and alerts you within minutes of a new listing so you can delist before a campaign goes out. Used by 2,000+ brands sending 248M+ emails monthly.
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